Angle-adjustable ultrasonic guide puncture needle

Abstract

The utility model provides an angle-adjustable ultrasonic guided puncture needle. The puncture needle comprises an inner core needle (6) arranged in an inner cavity of an outer needle (7). An inner core needle groove in the same direction as the needle body is formed in the inner core needle; a connecting rod structure (1) is mounted in the inner core needle groove in a swinging manner; an ultrasonic transducer (5) is installed at the head end of the connecting rod structure located at the needle point of the inner core needle, when a target tissue is punctured, the connecting rod structure and the ultrasonic transducer enter the target tissue along with the inner core needle, and the ultrasonic transmitting direction of the ultrasonic transducer changes along with swinging of the connecting rod structure; according to the utility model, the ultrasonic detection range can be adjusted by ultrasonic waves with variable angles or variable directions in the puncture detection process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an ultrasonically guided puncture needle with adjustable angle. Background Art

[0002] Currently, there are many types and models of puncture needles, but the real-time guidance scheme for the puncture needle's route is not perfect. Ultrasound guidance can provide the operator with special structural distribution information in the punctured tissue and provide guidance for the puncture needle's route to avoid sensitive tissues. It can greatly reduce the probability of over-puncture. Summary of the invention

[0003] The utility model provides an angle-adjustable ultrasonic-guided puncture needle, which can adjust the ultrasonic detection range by using ultrasonic waves with variable angles or directions during the puncture detection process.

[0004] The utility model adopts the following technical solutions.

[0005] An angle-adjustable ultrasound-guided puncture needle, the puncture detection needle comprising an inner core needle (6) disposed in the inner cavity of an outer needle (7); an inner core needle groove in the same direction as the needle body is provided at the inner core needle; a connecting rod structure (1) is installed in the inner core needle groove in a swingable manner; an ultrasonic transducer (5) is installed at the head end of the connecting rod structure located at the needle tip of the inner core needle; when puncturing a target tissue, the connecting rod structure and the ultrasonic transducer enter the target tissue along with the inner core needle, and the ultrasonic wave emission direction of the ultrasonic transducer changes with the swing of the connecting rod structure.

[0006] A handle (2) is provided at the rear of the puncture detection needle; the tail of the connecting rod structure is fixed to the handle.

[0007] A push-pull handle (9) is also provided at the rear of the puncture detection needle; the push-pull handle is supported on the handle (2) by a spring structure.

[0008] The tail of the inner core needle is arc-shaped, so that the moving direction of the ultrasonic transducer in the puncture operation is more matched with the moving direction of the puncture detection needle.

[0009] The connecting rod structure is installed at the inner core needle groove of the inner core needle in an adhesive manner.

[0010] The cross section of the connecting rod structure is circular.

[0011] The connecting rod structure is fixed in the inner core needle groove of the inner core needle via a pin shaft (4) in a swingable manner; a dial head is provided at the tail end of the rear handle at the rear of the puncture detection needle; when the dial head is manually dialed, the connecting rod structure rotates around the pin shaft.

[0012] The tail of the connecting rod structure is provided with a balance limit structure for limiting the toggling direction of the toggle head to a direction perpendicular to the pin shaft, so as to prevent the connecting rod from rotating around the connecting rod axis when being toggled.

[0013] The part of the connecting rod structure inserted into the inner core needle groove is provided with an elastic damping member (3) for resetting the connecting rod between the part and the wall of the inner core needle groove; the damping member enables the connecting rod structure to remain consistent with the direction of travel of the puncture detection needle when in a free position, and when the dial head is turned to deflect the connecting rod structure in the inner core needle groove, the damping member uses elastic force to reset the connecting rod structure in the inner core needle groove.

[0014] A method for using an ultrasonically guided puncture needle with adjustable angle, using the ultrasonically guided puncture detection needle described above, when performing puncture, the user places the ultrasonic transducer of the transmitting end of the ultrasonic detection device at the needle tip of the inner core needle, and attaches the receiving end of the ultrasonic detection device to the outer wall of the tested tissue, and the ultrasonic transducer penetrates into the tested tissue together with the puncture probe. If the needle tip of the inner core needle reaches the ultrasonic detection position in the tested tissue, the operator turns the dial to make the connecting rod structure in the inner core needle groove form an angle with its initial position, so that when the puncture detection needle is stationary, the ultrasonic transducer in the puncture detection needle is in a swing to expand the ultrasonic scanning range. When the receiving end at the outer wall of the tested tissue receives the ultrasonic signal emitted by the ultrasonic transducer in the puncture detection needle, it can provide more complete information and path selection for the puncture route to be carried out subsequently for the puncture detection, so that the subsequent puncture process can more easily avoid specific tissues and prevent excessive puncture.

[0015] Compared with the prior art, the beneficial effects of the present invention are: changing the current situation of blind puncture operation and relying on experience, using a more intuitive way to obtain the distribution position and situation of each tissue of the target during the puncture process, and evaluating the real-time puncture route, which greatly reduces the risk of puncture operation and avoids puncture failure.

[0016] In the utility model, the ultrasonic transducer is a single-vibrator in the form of adhesive mounting. By adhering to the connecting rod structure, it enters the target with the puncture needle to obtain real-time information during the puncture process. Unlike the traditional puncture needle, the connecting rod structure is fixed in the inner core needle by a pin shaft, and the pin shaft is used as the rotating shaft. By turning the dial head, it can rotate a certain angle in the slotted inner core needle, so that the area involved in the ultrasonic signal is significantly increased, thereby obtaining more comprehensive position information. During the puncture operation, by borrowing the ultrasonic feedback signal of the ultrasonic transducer, the position of the puncture needle and the internal situation of the target can be evaluated to avoid excessive puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0018] AttachedFigure 1 It is a schematic diagram of the utility model;

[0019] Attached Figure 2 It is a schematic diagram of the ultrasonic transducer swinging as the connecting rod is moved in the utility model;

[0020] Attached Figure 3 It is a schematic diagram of the connecting rod being fixed by a pin in the utility model;

[0021] Attached Figure 4 A schematic cross-sectional view of the puncture detection needle including the connecting rod portion;

[0022] Attached Figure 5 It is a schematic diagram of the cooperation between the connecting rod and the elastic damping member;

[0023] Attached Figure 6 is a schematic diagram of an inner core needle, an inner core needle groove and an inner core needle head;

[0024] In the figure: 1-connecting rod structure; 2-handle; 3-elastic damping member; 4-pin shaft; 5-ultrasonic transducer; 6-inner core needle; 7-outer needle; 8-spring structure; 9-push-pull handle. DETAILED DESCRIPTION

[0025] As shown in the figure, an ultrasonically guided puncture needle with adjustable angle comprises an inner core needle 6 placed in the inner cavity of an outer needle 7; an inner core needle groove in the same direction as the needle body is provided at the inner core needle; a connecting rod structure 1 is installed in the inner core needle groove in a swingable manner; an ultrasonic transducer 5 is installed at the head end of the connecting rod structure located at the needle tip of the inner core needle. When puncturing the target tissue, the connecting rod structure and the ultrasonic transducer enter the target tissue along with the inner core needle, and the ultrasonic emission direction of the ultrasonic transducer changes with the swing of the connecting rod structure.

[0026] A handle 2 is provided at the rear of the puncture detection needle; the tail of the connecting rod structure is fixed to the handle.

[0027] A push-pull handle 9 is also provided at the rear of the puncture detection needle; the push-pull handle is supported at the handle 2 by a spring structure 8 .

[0028] The tail of the inner core needle is arc-shaped, so that the moving direction of the ultrasonic transducer in the puncture operation is more matched with the moving direction of the puncture detection needle.

[0029] The connecting rod structure is installed at the inner core needle groove of the inner core needle in an adhesive manner.

[0030] The cross section of the connecting rod structure is circular.

[0031] The connecting rod structure is fixed in the inner core needle groove of the inner core needle in a swingable manner via the pin shaft 4; a dial head is provided at the tail end of the rear handle at the rear of the puncture detection needle; when the dial head is manually dialed, the connecting rod structure rotates around the pin shaft.

[0032] The tail of the connecting rod structure is provided with a balance limit structure for limiting the toggling direction of the toggle head to a direction perpendicular to the pin shaft, so as to prevent the connecting rod from rotating around the connecting rod axis when being toggled.

[0033] The part of the connecting rod structure that passes through the inner core needle groove is provided with an elastic damping member 3 for resetting the connecting rod between it and the wall of the inner core needle groove; the damping member enables the connecting rod structure to remain consistent with the direction of travel of the puncture detection needle when in a free position, and when the dial head is turned to deflect the connecting rod structure in the inner core needle groove, the damping member resets the connecting rod structure in the inner core needle groove with elastic force.

[0034] A method for using an ultrasonically guided puncture needle with adjustable angle, using the ultrasonically guided puncture detection needle described above, when performing puncture, the user places the ultrasonic transducer of the transmitting end of the ultrasonic detection device at the needle tip of the inner core needle, and attaches the receiving end of the ultrasonic detection device to the outer wall of the tested tissue, and the ultrasonic transducer penetrates into the tested tissue together with the puncture probe. If the needle tip of the inner core needle reaches the ultrasonic detection position in the tested tissue, the operator turns the dial to make the connecting rod structure in the inner core needle groove form an angle with its initial position, so that when the puncture detection needle is stationary, the ultrasonic transducer in the puncture detection needle is in a swing to expand the ultrasonic scanning range. When the receiving end at the outer wall of the tested tissue receives the ultrasonic signal emitted by the ultrasonic transducer in the puncture detection needle, it can provide more complete information and path selection for the puncture route to be carried out subsequently for the puncture detection, so that the subsequent puncture process can more easily avoid specific tissues and prevent excessive puncture.

Claims

1. An angle-adjustable ultrasound-guided puncture needle, characterized in that: The puncture needle comprises an inner core needle (6) disposed in the inner cavity of an outer needle (7); an inner core needle groove is provided at the inner core needle in the same direction as the needle body; a connecting rod structure (1) is installed in the inner core needle groove in a swingable manner; an ultrasonic transducer (5) is installed at the head end of the connecting rod structure located at the needle tip of the inner core needle, and when puncturing a target tissue, the connecting rod structure and the ultrasonic transducer enter the target tissue along with the inner core needle, and the ultrasonic wave emission direction of the ultrasonic transducer changes with the swing of the connecting rod structure; The connecting rod structure is fixed in the inner core needle groove of the inner core needle via a pin shaft (4) in a swingable manner; a dial head is provided at the tail end of the rear handle at the rear of the puncture detection needle; when the dial head is manually dialed, the connecting rod structure rotates around the pin shaft; The tail of the connecting rod structure is provided with a balance limit structure for limiting the toggling direction of the toggle head to a direction perpendicular to the pin shaft, so as to prevent the connecting rod from rotating around the connecting rod axis when being toggled; The part of the connecting rod structure inserted into the inner core needle groove is provided with an elastic damping member (3) for resetting the connecting rod between the part and the wall of the inner core needle groove; the damping member enables the connecting rod structure to remain consistent with the direction of travel of the puncture detection needle when in a free position, and when the dial head is turned to deflect the connecting rod structure in the inner core needle groove, the damping member uses elastic force to reset the connecting rod structure in the inner core needle groove.

2. The angle-adjustable ultrasound-guided puncture needle according to claim 1, characterized in that: A handle (2) is provided at the rear of the puncture detection needle; the tail of the connecting rod structure is fixed to the handle.

3. The angle-adjustable ultrasound-guided puncture needle according to claim 2, characterized in that: A push-pull handle (9) is also provided at the rear of the puncture detection needle.

4. The angle-adjustable ultrasound-guided puncture needle according to claim 1, characterized in that: The tail of the inner core needle is arc-shaped, so that the moving direction of the ultrasonic transducer during the puncture operation is more matched with the moving direction of the puncture detection needle.

5. The angle-adjustable ultrasound-guided puncture needle according to claim 1, characterized in that: The connecting rod structure is installed at the inner core needle groove of the inner core needle in an adhesive manner.

6. The angle-adjustable ultrasound-guided puncture needle according to claim 1, characterized in that: The cross section of the connecting rod structure is circular.

7. The angle-adjustable ultrasound-guided puncture needle according to claim 3, characterized in that: The push-pull handle is supported on the handle (2) by a spring structure.

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